# RPC

All dApps (decentralized applications) need a way to communicate with blockchains. Without a means of communication, dApps won’t be able to access information and make transactions on the blockchain on which they operate. This connection between the blockchain and the dApps is facilitated by what is known as RPC nodes.

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[Change RPC](/guides/rpc/change-rpc.md)
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[Create your own RPC](/guides/rpc/create-your-own-rpc.md)
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